{
    "action": "tool_call",
    "reasoning": "Profile categorical columns (Gender, Education_Level, AI_Tool, Would_Recommend, AI_Purpose, User_Type) in one query to see spelling/case variants and blanks.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT 'Gender' AS col, Gender AS v, COUNT(*) AS n FROM raw.AI_Usage_and_Impact_on_Students_and_Professionals GROUP BY 2 UNION ALL SELECT 'Education', Education_Level, COUNT(*) FROM raw.AI_Usage_and_Impact_on_Students_and_Professionals GROUP BY 2 UNION ALL SELECT 'Tool', AI_Tool, COUNT(*) FROM raw.AI_Usage_and_Impact_on_Students_and_Professionals GROUP BY 2 UNION ALL SELECT 'Recommend', Would_Recommend, COUNT(*) FROM raw.AI_Usage_and_Impact_on_Students_and_Professionals GROUP BY 2 UNION ALL SELECT 'Purpose', AI_Purpose, COUNT(*) FROM raw.AI_Usage_and_Impact_on_Students_and_Professionals GROUP BY 2 UNION ALL SELECT 'UserType', User_Type, COUNT(*) FROM raw.AI_Usage_and_Impact_on_Students_and_Professionals GROUP BY 2 ORDER BY 1, 3 DESC",
        "purpose": "Show categorical spelling/case variants and blanks",
        "source": "raw"
    }
}